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Spinal cord ischemia following thoracotomy without epidural anesthesia

[Ischémie de la moelle épinière à la suite d’une thoracotomie sans anesthésie péridurale]

Aeyal Raz, MD PhD^*, Aharon Avramovich, MD^*, Efrat Saraf-Lavi, MD, Milton Saute, MD and Leonid A. Eidelman, MD^*

^* From the Departments of Anesthesiology,
Radiology; and
Cardiothoracic Surgery, Rabin Medical Center, Campus Beilinson, Petah Tikva, Israel.

Address correspondence to: Dr. Aeyal Raz, Department of Anesthesiology, Rabin Medical Center, Campus Beilinson, Petah Tikva, 49100, Israel. Phone: 972-3-9376850; Fax: 972-3-9376851; E-mail: eyalraz{at}clalit.org.il

Purpose: Paraplegia is an uncommon yet devastating complication following thoracotomy, usually caused by compression or ischemia of the spinal cord. Ischemia without compression may be a result of global ischemia, vascular injury and other causes. Epidural anesthesia has been implicated as a major cause. This report highlights the fact that perioperative cord ischemia and paraplegia may be unrelated to epidural intervention.

Clinical features: A 71-yr-old woman was admitted for a left upper lobectomy for resection of a non-small cell carcinoma of the lung. The patient refused epidural catheter placement and underwent a left T5–6 thoracotomy under general anesthesia. During surgery, she was hemodynamically stable and good oxygen saturation was maintained. Several hours following surgery the patient complained of loss of sensation in her legs. Neurological examination disclosed a complete motor and sensory block at the T5–6 level. Magnetic resonance imaging (MRI) revealed spinal cord ischemia. The patient received iv steroid treatment, but remained paraplegic. Five months following the surgery there was only partial improvement in her motor symptoms. A follow-up MRI study was consistent with a diagnosis of spinal cord ischemia.

Conclusion: In this case of paraplegia following thoracic surgery for lung resection, epidural anesthesia/analgesia was not used. The MRI demonstrated evidence of spinal cord ischemia, and no evidence of cord compression. This case highlights that etiologies other than epidural intervention, such as injury to the spinal segmental arteries during thoracotomy, should be considered as potential causes of cord ischemia and resultant paraplegia in this surgical population.

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